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8.A.23.1.64
CD146, MCAM or MUC18 of 646 aas with 2 TMSs, N- and C-terminal.  It plays a role in cell adhesion, and in cohesion of the endothelial monolayer at intercellular junctions in vascular tissues (Anfosso et al. 2001). Its expression may allow melanoma cells to interact with cellular elements of the vascular system, thereby enhancing hematogeneous tumor spread. It could be an adhesion molecule active in neural crest cells during embryonic development. It acts as a surface receptor that triggers tyrosine phosphorylation of FYN and PTK2/FAK1, and a transient increase in the intracellular calcium concentration (Johnson et al. 1993). It is a possible drug target for pheochromocytomas and paragangliomas (PPGLs), rare neuroendocrine tumors (Vit et al. 2023).

Accession Number:P43121
Protein Name:Cell surface glycoprotein MUC18
Length:646
Molecular Weight:71607.00
Species:Homo sapiens (Human) [9606]
Number of TMSs:1
Location1 / Topology2 / Orientation3: Membrane1 / Single-pass type I membrane protein2
Substrate

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MGLPRLVCAF LLAACCCCPR VAGVPGEAEQ PAPELVEVEV GSTALLKCGL SQSQGNLSHV 
61:	DWFSVHKEKR TLIFRVRQGQ GQSEPGEYEQ RLSLQDRGAT LALTQVTPQD ERIFLCQGKR 
121:	PRSQEYRIQL RVYKAPEEPN IQVNPLGIPV NSKEPEEVAT CVGRNGYPIP QVIWYKNGRP 
181:	LKEEKNRVHI QSSQTVESSG LYTLQSILKA QLVKEDKDAQ FYCELNYRLP SGNHMKESRE 
241:	VTVPVFYPTE KVWLEVEPVG MLKEGDRVEI RCLADGNPPP HFSISKQNPS TREAEEETTN 
301:	DNGVLVLEPA RKEHSGRYEC QGLDLDTMIS LLSEPQELLV NYVSDVRVSP AAPERQEGSS 
361:	LTLTCEAESS QDLEFQWLRE ETGQVLERGP VLQLHDLKRE AGGGYRCVAS VPSIPGLNRT 
421:	QLVNVAIFGP PWMAFKERKV WVKENMVLNL SCEASGHPRP TISWNVNGTA SEQDQDPQRV 
481:	LSTLNVLVTP ELLETGVECT ASNDLGKNTS ILFLELVNLT TLTPDSNTTT GLSTSTASPH 
541:	TRANSTSTER KLPEPESRGV VIVAVIVCIL VLAVLGAVLY FLYKKGKLPC RRSGKQEITL 
601:	PPSRKSELVV EVKSDKLPEE MGLLQGSSGD KRAPGDQGEK YIDLRH